US6374654B1 - Locking arrangement comprising a lock cylinder and an associated key - Google Patents

Locking arrangement comprising a lock cylinder and an associated key Download PDF

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Publication number
US6374654B1
US6374654B1 US09/565,845 US56584500A US6374654B1 US 6374654 B1 US6374654 B1 US 6374654B1 US 56584500 A US56584500 A US 56584500A US 6374654 B1 US6374654 B1 US 6374654B1
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US
United States
Prior art keywords
key
locking arrangement
broad
angle
cone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/565,845
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English (en)
Inventor
Alexander Stefanescu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
C Ed Schulte Zylinderschlossfabrik GmbH
Original Assignee
C Ed Schulte Zylinderschlossfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10000194A external-priority patent/DE10000194A1/de
Application filed by C Ed Schulte Zylinderschlossfabrik GmbH filed Critical C Ed Schulte Zylinderschlossfabrik GmbH
Assigned to C. ED. SCHULTE GESELLSCHAFT MIT BESCHRANKTER HAFTUNG ZYLINDER-SCHLOSSFABRIK reassignment C. ED. SCHULTE GESELLSCHAFT MIT BESCHRANKTER HAFTUNG ZYLINDER-SCHLOSSFABRIK ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STEFANESCU, ALEXANDER
Application granted granted Critical
Publication of US6374654B1 publication Critical patent/US6374654B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/08—Key guides; Key pins ; Keyholes; Keyhole finders
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7842—Single shank or stem
    • Y10T70/787—Irregular nonplanar or undulated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7881—Bitting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8432—For key-operated mechanism
    • Y10T70/8595—Key guides, internal

Definitions

  • the invention relates to a locking arrangement and to the associated key.
  • a locking arrangement having a lock cylinder and an associated key, in particular flat turning key, is known in the prior art.
  • the core of the lock cylinder has a keyway which is open in the direction of the end side of the cylinder and is provided with profile ribs/grooves.
  • the vertex of a conical opening, which opens in the direction of the end side of the cylinder, is located in the centre of said keyway.
  • the key forms a tip with flanks in the form of arcuate lines.
  • the combination of conical opening and tip with arcuate flanks is intended to facilitate the introduction of the key into the keyway.
  • the introduction of the key is complicated, in particular, in the case of flat turning keys with narrow profile ribs/grooves.
  • the key On account of the profilings located closely adjacent to one another, the key has to be inserted without deviating to any great extent from the precisely aligned position. Furthermore, locking systems profiled in this way barely allow any positions in which the key axis is inclined to any greater extent in relation to the keyway axis.
  • the prior art also proposes a solution in which, rather than being rounded, the key has a tip formed by two rectilinear flanks.
  • the object of the invention is to facilitate the introduction of a key into the keyway.
  • the tip is formed by two arcuate lines, of which the point of intersection is located in the broad-side centre of the key, and the tangent angle at the point of intersection is greater than the vertex angle of the cone opening, it being the case that the arcuate lines have bevels, in the direction of the mutually opposite broad sides, having a bevel angle which is smaller than the vertex angle of the cone opening.
  • the conical opening forms a type of funnel which opens out into the keyway. The key is inserted in said funnel. It is generally the case that the key axis is not in alignment with the keyway axis. Rather, the key axis is tilted by an angle of inclination in relation to the keyway axis.
  • the key shank is rotated by an angle of rotation in relation to the orientation of the keyway.
  • the arcuate lines are in tangential contact with the cone wall within a broad-side pivoting region.
  • This broad-side pivoting region is bounded by the pivot position in which the tip of the key shank, which is formed by the point of inter-section of the arcuate lines, comes into abutment against the cone wall.
  • the key tip is spaced apart from the vertex of the cone and projects therein in a contactless manner.
  • the key may also be pivoted through a narrow-side pivoting region in relation to the keyway axis.
  • the narrow-side pivoting region is bounded by the bevel angle.
  • the key With its tip located, in the cone, can be pivoted to the extent where the bevels come into abutment against the cone wall. If the key is inserted into the cone in a state in which it is rotated in relation to the orientation of the keyway, then the pivoting into the above-defined broad-side pivoting region is simplified by the geometry. The user feels the pivot angle at which the tip moves away from the abutment against the cone wall. If the user has the key in this broad-side pivoting region and rotates the key, then the key tip finds its correct, central position in relation to the keyway and with the correct rotary orientation, on account of the bevels, can be inserted into the keyway.
  • the slopes of the bevel which then take effect cause the key to be righted into the aligned position. If the key is rotated out of a position in which the key axis is located in the broad-side pivoting region, until the correct rotary orientation has been reached, then the narrow side is also oriented in the narrow-side pivoting region. This means that, in this position, it is only the end edges of the flank which butt against the cone wall.
  • the bevel angle is greater approximately by 15 to 25° than half the vertex angle of the cone.
  • the thickness of the non-bevelled flank section is approximately half to a third of the narrow-side thickness.
  • the arcuate lines are preferable circle arcs.
  • the centres are located in the broad side of the key and are spaced apart from the broad-side centre line by a distance. This distance corresponds approximately to 30 to 35% of the broad-side thickness of the key.
  • the radius of the arcuate side is preferably approximately 105 to 110% of the thickness of the broad side of the key.
  • the diameter of the cone opening is preferably smaller than the broad-side thickness of the key.
  • the cone angle that is to say the vertex angle of the funnel-shaped opening, is preferably approximately 110°.
  • a development of the invention relates to the cone opening of the cylinder core.
  • the vertex angle of the conical opening is greater on the outside of the opening than in the centre of the opening.
  • the opening preferably forms an inner cone with a smaller vertex angle than the outer cone.
  • the inner cone is in the form of an oval.
  • the oval is directed longitudinally in relation to the keyway. This produces, in the region of the keyway, a step-shaped transition between the two cone walls. In the direction transverse to this, the transition is formed as an edge.
  • the vertex angle of the more pointed, inner cone is preferably 90°.
  • the invention also relates, in particular, to a key for the locking arrangement described.
  • FIG. 1 shows a schematic illustration of a plan view of a key according to the invention
  • FIG. 2 shows a side view of the key according to FIG. 1,
  • FIG. 3 shows the schematic illustration of a core of a lock cylinder according to the invention, in elevation
  • FIG. 4 shows an illustration according to FIG. 3 with the viewing direction rotated through 90°.
  • FIG. 5 shows a front view of the lock-cylinder core
  • FIG. 6 shows a schematic illustration of the key tip located in the cone opening in a state in which it is rotated through approximately 90° in relation to the orientation of the keyway, with a view of the broad side,
  • FIG. 7 shows the illustration of the boundary of the broad-side pivoting region alpha
  • FIG. 8 shows the narrow-side view of a key fitted into the cone by way of the tip and in an aligned position in relation to the keyway axis
  • FIG. 9 shows the boundary region of the narrow-side pivoting region
  • FIG. 10 shows a plan view of the end side of a lock-cylinder core of a second exemplary embodiment
  • FIG. 11 shows a side view with the cone opening partly cut away
  • FIG. 12 shows a side view, rotated through 90°, in longitudinal section through the keyway, partly cut away.
  • the key 1 has a key grip 14 and a tip 5 located opposite said grip 14 .
  • the tip 5 is located in the broad-side centre 7 .
  • the tip 5 is flanked by flanks 6 in the form of arcuate lines.
  • the flanks 6 are generated by circle arcs which are described around the arc centre 12 with a radius R.
  • the arc centres 12 are located in the broad side 8 of the key, to be precise spaced apart from the broad-side centre line 7 in each case by a distance A.
  • the distance A is 30 to 35% of the width B of the broad side of the key.
  • the arcuate lines 6 intersect at the tip 5 such that the tangent angle delta of the arcuate lines 6 at the point of intersection 5 is greater than the vertex angle My ( ⁇ ) of a cone opening 4 , which is located on the end side of a core 2 of a lock cylinder.
  • the arcuate line 6 forms a flank end section spaced apart from the broad sides 8 .
  • This arcuate end section has a width S 1 and is aligned transversely to the extent of the broad-side surfaces 8 .
  • the thickness of said flank end section is approximately half to a third of the narrow-side thickness S.
  • Said flank end section merges into the broad side 8 , a bevel 9 being formed in the process.
  • the bevel angle omega is smaller than half the cone angle My ( ⁇ ).
  • the cone angle My is approximately 110°.
  • the bevel angle omega is approximately 15 to 25° greater than half the cone angle My ( ⁇ ).
  • the thickness of the bevels 9 are the same on each of the two broad sides 8 of the key. This means that the bevels 9 are each spaced apart from the narrow-side centre 13 by the same distance.
  • FIGS. 6 to 9 illustrate schematically the positions which the key 1 can assume within the cone opening 4 .
  • the key 1 placed transversely to the orientation of the keyway, is positioned against the cone wall 10 by way of its flank 6 such that the end side of the flank 6 butts tangentially against the cone wall 10 at the locations 11 .
  • the longitudinal centre axis of the key is in alignment with the keyway axis.
  • the key 1 may be pivoted through a broad-side pivoting region alpha, the tangential abutment of the flanks 6 against the cone wall 10 being maintained in the process. If the boundary angle of the broad-side pivoting region alpha is reached (FIG.
  • the broad-side centre line 7 is in a state in which it is pivoted by the angle alpha in relation to the keyway axis 16 .
  • the tip 5 of the key butts against the cone wall 10 .
  • the key 11 can be rotated about its key axis until it is correctly oriented in relation to the keyway 3 .
  • the tip of the key 1 can be inserted in the keyway, the border edge of the keyway 3 running on the bevel 9 .
  • the key is aligned such that the narrow-side pivot angle beta decreases until the longitudinal centre axis of the key is in alignment with the keyway axis 16 .
  • FIG. 8 illustrates an insertion position of the key 1 in which the narrow-side centre line 13 is not pivoted in relation to the keyway axis 16 .
  • the maximum permissible pivoting made possible by the selection of the bevel angle omega is illustrated in FIG. 9 .
  • This pivot position defines the boundary angle of the narrow-side pivoting region beta, within which a border edge 6 ′ of the flank 6 still butts against the cone wall 10 .
  • the key which is usually inserted in a state in which it is rotated in relation to the orientation of the keyway, is first of all brought into a pivot position in which the key axis is located within a broad-side pivoting region alpha in relation to the keyway axis 16 . The user can feel when this region has been reached. The key 1 is then rotated in relation to the cylinder core 2 until it is oriented correctly in relation to the keyway 3 .
  • the pivot angle of the longitudinal centre axis of the key in relation to the keyway axis 16 is substantially maintained, with the result that, once pivoting has taken place, the longitudinal centre axis of the key is located in a pivot position in relation to the keyway axis 16 such that the angle between the keyway axis 16 and the narrow-side centre line 13 is located within a narrow-side pivoting region beta.
  • the tip 5 of the key 1 within the narrow-side pivoting region beta, said tip being narrowed to a width S 1 on account of the bevels 9 , can pass into the keyway 3 . Since the vertex of the conical opening 4 is located in the centre of the keyway 3 , the key 1 is also centred in relation to the keyway 3 , this achieving the aligned position in relation to the profiling.
  • the conical opening 4 has a vertex angle of 110° in the outer region.
  • An inner cone 17 with a vertex angle of 90°, is located in the centre of the opening 4 .
  • the inner cone 17 is in the form of an oval. While the circular diameter of the outer cone border is 9 mm, the smallest diameter of the inner cone is 4 mm. The maximum diameter of the inner cone border is 5.5 mm.
  • the oval outline of the inner cone 17 the latter merges, in certain regions, into the wall of the outer cone 4 with an edge 18 being formed in the process. In the region of the narrow sides of the inner cone 17 , the latter merges into the outer cone 4 with a step 19 being formed in the process.
  • the inner cone is produced by means of a conical milling cutter. Once it has reached its penetration depth, said milling cutter is displaced along the keyway 3 , thus producing the oval contour of the inner cone 17 .

Landscapes

  • Lock And Its Accessories (AREA)
  • Chairs Characterized By Structure (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Fluid-Damping Devices (AREA)
  • Pens And Brushes (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
US09/565,845 1999-05-08 2000-05-05 Locking arrangement comprising a lock cylinder and an associated key Expired - Fee Related US6374654B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19921454 1999-05-08
DE19921454 1999-05-08
DE10000194 2000-01-05
DE10000194A DE10000194A1 (de) 1999-05-08 2000-01-05 Aus Schliesszylinder und zugehörigem Schlüssel bestehende Schliessvorrichtung

Publications (1)

Publication Number Publication Date
US6374654B1 true US6374654B1 (en) 2002-04-23

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ID=26003742

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/565,845 Expired - Fee Related US6374654B1 (en) 1999-05-08 2000-05-05 Locking arrangement comprising a lock cylinder and an associated key

Country Status (12)

Country Link
US (1) US6374654B1 (da)
EP (1) EP1057951B1 (da)
CN (1) CN1153879C (da)
AT (1) ATE217934T1 (da)
CA (1) CA2307795C (da)
CZ (1) CZ298307B6 (da)
DK (1) DK1057951T3 (da)
ES (1) ES2173835T3 (da)
HK (1) HK1029824A1 (da)
NL (1) NL1014746C1 (da)
PL (1) PL196927B1 (da)
PT (1) PT1057951E (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008000034A1 (de) * 2008-01-10 2009-07-16 Aug. Winkhaus Gmbh & Co. Kg Schlüssel für einen Schließzylinder
CN104372991A (zh) * 2014-10-20 2015-02-25 赵战西 一种钥匙及防盗锁具

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437939A (en) * 1890-10-07 Henry b
US688052A (en) * 1901-06-17 1901-12-03 Eagle Lock Co Desk-lock.
US748394A (en) * 1903-04-20 1903-12-29 Henry Philipp Martin Service-box cover.
DE380476C (de) * 1923-09-07 Hans Spruth Dipl Ing Stechschluessel fuer Schloesser mit ringscheibenfoermigen Zuhaltungen
US2598376A (en) * 1951-05-28 1952-05-27 Heinz Bernard Luminous attachment for door locks
US3352135A (en) * 1965-08-24 1967-11-14 Nat Lock Co Plate tumbler plugs
US4612787A (en) * 1983-02-04 1986-09-23 EVVA-Werk Spezialerzeugung Von Zylinder- und Sicherheitsschlossern m.b.H. & Co., Kommanditgesellschaft Arrangement for cylinder locks
US4686843A (en) * 1985-04-11 1987-08-18 Oy Wartsila Ab Cylinderlock-key-combination
DE3713364A1 (de) * 1987-04-21 1988-11-10 Ludwig Schiele Schluesseltrichter - vorrichtung fuer das leichtere einfuehren von flachschluesseln in den schlosszylinder
US5076081A (en) * 1990-07-06 1991-12-31 Lori Corporation Key for interchangable core lock
US5088306A (en) * 1989-10-31 1992-02-18 Medeco Security Locks, Inc. Cylinder lock with changeable keyway
EP0546912A1 (fr) * 1991-12-09 1993-06-16 Antivols Simplex Clé dentée, notamment pour serrure ou antivol de véhicule automobile
US5287712A (en) * 1991-07-27 1994-02-22 Emhart, Inc. Locking arrangement consisting of key and lock cylinder
US5349830A (en) * 1990-01-17 1994-09-27 Ernst Keller Lock system
US5477713A (en) * 1994-03-29 1995-12-26 Edward Roddy, III Key orientation system
US5490405A (en) * 1993-03-25 1996-02-13 Abloy Security Ltd Oy Cylinder lock--key--combination
US5502991A (en) * 1993-07-13 1996-04-02 Trioving As Lock cylinder with variable keyway profile
US5778712A (en) * 1994-07-28 1998-07-14 Assa Ab Cylinder lock/key combination, a key and a key blank therefor
US5845525A (en) * 1993-12-30 1998-12-08 Widen; Bo Cylinder lock and key combination with a guiding profile ridge in the lock
US6145357A (en) * 1997-02-27 2000-11-14 C. Ed. Schulte Gmbh Flat key for a tumbler-containing locking cylinder of a lock apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH606714A5 (da) * 1976-05-20 1978-11-15 Bauer Kaba Ag
DE29510153U1 (de) * 1995-06-22 1995-08-31 Golub, Danijel, 76185 Karlsruhe Zylinderschlösser mit Mitnehmer und Sicherheitsschlüssel
FR2745843B1 (fr) * 1996-03-07 1998-04-17 Fichet Bauche Cle pour barillet de serrure et barillet de serrure manoeuvrable avec ladite cle

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437939A (en) * 1890-10-07 Henry b
DE380476C (de) * 1923-09-07 Hans Spruth Dipl Ing Stechschluessel fuer Schloesser mit ringscheibenfoermigen Zuhaltungen
US688052A (en) * 1901-06-17 1901-12-03 Eagle Lock Co Desk-lock.
US748394A (en) * 1903-04-20 1903-12-29 Henry Philipp Martin Service-box cover.
US2598376A (en) * 1951-05-28 1952-05-27 Heinz Bernard Luminous attachment for door locks
US3352135A (en) * 1965-08-24 1967-11-14 Nat Lock Co Plate tumbler plugs
US4612787A (en) * 1983-02-04 1986-09-23 EVVA-Werk Spezialerzeugung Von Zylinder- und Sicherheitsschlossern m.b.H. & Co., Kommanditgesellschaft Arrangement for cylinder locks
US4686843A (en) * 1985-04-11 1987-08-18 Oy Wartsila Ab Cylinderlock-key-combination
DE3713364A1 (de) * 1987-04-21 1988-11-10 Ludwig Schiele Schluesseltrichter - vorrichtung fuer das leichtere einfuehren von flachschluesseln in den schlosszylinder
US5088306A (en) * 1989-10-31 1992-02-18 Medeco Security Locks, Inc. Cylinder lock with changeable keyway
US5349830A (en) * 1990-01-17 1994-09-27 Ernst Keller Lock system
US5076081A (en) * 1990-07-06 1991-12-31 Lori Corporation Key for interchangable core lock
US5287712A (en) * 1991-07-27 1994-02-22 Emhart, Inc. Locking arrangement consisting of key and lock cylinder
EP0546912A1 (fr) * 1991-12-09 1993-06-16 Antivols Simplex Clé dentée, notamment pour serrure ou antivol de véhicule automobile
US5490405A (en) * 1993-03-25 1996-02-13 Abloy Security Ltd Oy Cylinder lock--key--combination
US5502991A (en) * 1993-07-13 1996-04-02 Trioving As Lock cylinder with variable keyway profile
US5845525A (en) * 1993-12-30 1998-12-08 Widen; Bo Cylinder lock and key combination with a guiding profile ridge in the lock
US5477713A (en) * 1994-03-29 1995-12-26 Edward Roddy, III Key orientation system
US5778712A (en) * 1994-07-28 1998-07-14 Assa Ab Cylinder lock/key combination, a key and a key blank therefor
US6145357A (en) * 1997-02-27 2000-11-14 C. Ed. Schulte Gmbh Flat key for a tumbler-containing locking cylinder of a lock apparatus

Also Published As

Publication number Publication date
PT1057951E (pt) 2002-10-31
PL196927B1 (pl) 2008-02-29
CN1274037A (zh) 2000-11-22
CZ20001634A3 (cs) 2000-12-13
EP1057951A1 (de) 2000-12-06
ATE217934T1 (de) 2002-06-15
DK1057951T3 (da) 2002-09-16
EP1057951B1 (de) 2002-05-22
ES2173835T3 (es) 2002-11-01
PL339993A1 (en) 2000-11-20
CA2307795A1 (en) 2000-11-08
HK1029824A1 (en) 2001-04-12
CA2307795C (en) 2008-01-15
NL1014746C1 (nl) 2000-11-09
CZ298307B6 (cs) 2007-08-22
CN1153879C (zh) 2004-06-16

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